Ship-in-Bottle synthesis of Pt and Ru carbonyl clusters in NaY zeolite micropore and ordered mesoporous channels of FSM-16; XAFS/FTIR/TPD characterization and their catalytic behaviors

Abstract Ru 3 (CO) 12 , H 4 Ru 4 (CO) 12 , [Pt 9 (CO) 18 ] 2− were synthesized in NaY cages by “ship-in-bottle” technique. Thermostable robust platinum clusters [Pt 15 (CO) 30 ] 2− combined with R 4 N + (R=Me,Et,Bu and Hex) and MV 2+ were encapsulated in the ordered hexagonal mesoporous channels of FSM-16(27.5 diameter) which were characterized by FTIR, EXAFS and HRTEM methods. They remain their flexibility of cluster frameworks and exhibited remarkedly higher catalytic activites for the water-gas-shift reaction, compared with Pt 9 -Pt 12 clusters restricted in NaY micropores(12). Highly disperesed Pt aggregates (ca 15 size) in FSM-16 channels were uniformally prepared from the Pt 15 carbonyl clusters by the evacuation, at 323–473K to controlled removal of CO. The coordinatively unsaturated Pt aggregates in FSM-16 exhibited catalytic activities in the hydrogenation of ethene and butadiene selectively towards butenes.